INITIAL SETUP

paths

path_in <- "c:/Users/krizovak/Documents/__EPIC__/R/" 

path_met <- "C:/Users/krizovak/Documents/__EPIC__/R/_tables/v3_czsk/" 
path_epic <- "c:/Users/krizovak/Documents/__EPIC__/EPIC_CS_v4_Aug2022/" 

path_tab <- "c:/Users/krizovak/Documents/__EPIC__/R/_tables/" 
path_shp <- "c:/Users/krizovak/Documents/__EPIC__/R/_shapefiles/" 

path_out <- "c:/Users/krizovak/Documents/__EPIC__/R/_cultivarRESULTS/"

time period

period <- 1989:2019

crop params

  • crop: CORN

  • crop ID: 2

  • crop name: corn

  • seasonality: SPG

  • WCY parameter: 1.15

SPATIAL REFERENCE

HARVEST OUTPUT FILES

Steps for AFTER simulation:

COPY AND PASTE ACM AND ACY

EPIC output files are stored in EPIC_CS_X/EPIC0810 folder

Backup files:

  • create a folder ’_outs’ in cultivar results folder

  • create a subfolder ‘crop_outs_currentDate’ in ’_outs’ folder

  • copy all files in both newly created folders, so that:

    • there is a backup in date-named folder

    • there are always the latest ACM and ACY files to be further worked with

ACM HARVEST

Annual cropman file

Variable / Description / Units
Y = Year
RT# = Rotation number
PRCP = Precipitation mm
ET = Potential evapotranspiration mm
ET = Evapotranspiration mm
Q = Runoff mm
SSF = Subsurface flow mm
PRK = Percolation mm
CVF = MUSLE crop cover factor
MUSS = Water erosion T/ha
YW = Wind erosion T/ha
GMN = N mineralized kg/ha
NMN = Humus mineralization kg/ha
NFIX = Nitrogen fixation kg/ha
NITR = Nitrification kg/ha
AVOL = Nitrogen volatilization kg/ha
DN = Denitrification kg/ha
YON = Nitrogen loss with sediment kg/ha
QNO3 = Nitrate loss in surface runoff kg/ha
SSFN = Nitrogen in subsurface flow kg/ha
PRKN = Nitrogen loss in percolate kg/ha
MNP = Phosphorus mineralized kg/ha
YP = Phosphorus loss in sediment kg/ha
QAP = Labile phosphorus loss in runoff kg/ha
PRKP = Phosphorus loss in percolate kg/ha
LIME = Lime applied kg/ha
OCPD = Organic carbon in plow layer depth set by PARM(16) kg/ha
TOC = Organic carbon in soil profile kg/ha
APBC = Labile phosphorus content in plow layer %
TAP = Total labile p in soil profile kg/ha
TNO3 = Total nitrate in soil profile kg/ha

ACY HARVEST

Annual Crop Yield

Variable / Description / Units
Y = Year
RT# = Fertilizer ID
CPNM = Crop name
YLDG = Grain yield T/ha
YLDF = Forage yield T/ha
BIOM Biomass T/ha
YLN = Nitrogen used by crop kg/ha
YLP = Phosphorus used by crop kg/ha
FTN = Nitrogen applied kg/ha
FTP = Phosphorus applied kg/ha
IRGA = Irrigation volume applied mm
IRDL = Irrigation water lost in delivery system mm
WUEF = Water use efficiency (crop yield / growing season ET) kg/mm
GSET = Growing season et (mm) mm
CAW = Crop available water (soil water at planting + growing season rainfall - runoff) mm
CRF = Growing season rainfall mm
CQV = Growing season runoff mm
COST = Cost of production $/ha
COOP = Operating cost $/ha
RYLG = Return for grain yield $/ha
RYLF = Return for forage yield $/ha
PSTF = Pest damage factor (fraction of yield remaining after pest damage
WS = Water stress days d/yr
NS = Nitrogen stress days d/yr
PS = Phosphorus stress days d/yr
KS = Potassium stress days d/yr
TS = Temperature stress days d/yr
AS = Aeration stress days d/yr
SS = Salinity stress factor
PPOP = Plant population plants/m2
IPLD = Planting date
IGMD = Germination date
IHVD = Harvest date

OUTPUT TABLE

ACM and ACY tables combined in one
Contains all important outputs of the simulation

CULTIVARS REVIEW

CULTIVARS

Cultivars of corn
CROP CROPID CULT PLN_JUL HRV_JUL LVP sow_dat PLN_MON PLN_DAY hrv_dat HRV_MON HRV_DAY
CORN 155 b1 115 265 150 425 4 25 922 9 22
CORN 155 b2 125 275 150 505 5 5 1002 10 2
CORN 155 b3 135 285 150 515 5 15 1012 10 12
CORN 155 h1 121 266 145 501 5 1 923 9 23
CORN 155 h2 130 275 145 510 5 10 1002 10 2
CORN 155 h3 140 285 145 520 5 20 1012 10 12
CORN 155 k1 91 266 175 401 4 1 923 9 23
CORN 155 k2 100 275 175 410 4 10 1002 10 2
CORN 155 k3 110 285 175 420 4 20 1012 10 12
CORN 155 r1 105 280 175 415 4 15 1007 10 7
CORN 155 r2 115 290 175 425 4 25 1017 10 17
CORN 155 r3 125 300 175 505 5 5 1027 10 27

MAP YIELD FOR ALL SCENARIOS

METEOROLOGICAL MAPS

STRESS MAPS

  • scenario-specific factors

PLANTING, GERMINATION AND HARVEST DATE SHIFTS

criteria:

working DF: shifts

working DF: avg_shifts

IPLD

IGMD

IHVD

SELECTING SCENARIO

BASED ON IPLD

b2 b3 h2 h3 k3 r3 5 576 1 311 189 340

Selected cultivars of corn based on IPLD
CROP CROPID CULT PLN_JUL HRV_JUL LVP sow_dat PLN_MON PLN_DAY hrv_dat HRV_MON HRV_DAY
CORN 155 b2 125 275 150 505 5 5 1002 10 2
CORN 155 b3 135 285 150 515 5 15 1012 10 12
CORN 155 h2 130 275 145 510 5 10 1002 10 2
CORN 155 h3 140 285 145 520 5 20 1012 10 12
CORN 155 k3 110 285 175 420 4 20 1012 10 12
CORN 155 r3 125 300 175 505 5 5 1027 10 27

BASED ON IGMD

b3 h3 k3 r3 581 312 189 340

Selected cultivars of corn based on IGMD
CROP CROPID CULT PLN_JUL HRV_JUL LVP sow_dat PLN_MON PLN_DAY hrv_dat HRV_MON HRV_DAY
CORN 155 b3 135 285 150 515 5 15 1012 10 12
CORN 155 h3 140 285 145 520 5 20 1012 10 12
CORN 155 k3 110 285 175 420 4 20 1012 10 12
CORN 155 r3 125 300 175 505 5 5 1027 10 27

BASED ON IHVD

Selected cultivars of corn based on IHVD
CROP CROPID CULT PLN_JUL HRV_JUL LVP sow_dat PLN_MON PLN_DAY hrv_dat HRV_MON HRV_DAY
CORN 155 b1 115 265 150 425 4 25 922 9 22
CORN 155 b2 125 275 150 505 5 5 1002 10 2
CORN 155 b3 135 285 150 515 5 15 1012 10 12
CORN 155 h1 121 266 145 501 5 1 923 9 23
CORN 155 h2 130 275 145 510 5 10 1002 10 2
CORN 155 h3 140 285 145 520 5 20 1012 10 12
CORN 155 k3 110 285 175 420 4 20 1012 10 12
CORN 155 r1 105 280 175 415 4 15 1007 10 7
CORN 155 r2 115 290 175 425 4 25 1017 10 17
CORN 155 r3 125 300 175 505 5 5 1027 10 27